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Rainwater Harvesting Microhome Constructed With QuadCore Panels and Accoya Wood

Authors:
David Seth Donnell, Anthony David Gengaro
Rainwater Harvesting Microhome Constructed With QuadCore Panels and Accoya Wood

Project in-detail

Constructed from sustainable Accoya wood and enhanced with QuadCore panels, the microhome utilizes an integrated rainwater harvesting system to provide efficient housing solutions for the Havasupai tribe in Arizona.
5 key facts about this project
01
Constructed with Accoya wood, ensuring durability and minimal maintenance.
02
Integrates QuadCore panels for superior insulation and energy efficiency.
03
Features a rainwater harvesting system tailored to the local climate needs.
04
Designed with a flexible open floor plan for communal living and activities.
05
Emphasizes passive cooling techniques to reduce reliance on mechanical systems.

### Project Overview

The Pai House is a microhome designed for the Havasupai tribe, located within the Havasupai Indian Reservation in Arizona, near the Grand Canyon. This structure addresses the unique environmental challenges of the area while integrating cultural heritage with contemporary architectural practices and sustainable living principles.

### Design Approach

#### Conceptual Framework

Drawing inspiration from the traditional homes of the Havasupai tribe, the design incorporates local materials and sustainable technologies to reflect the tribe's values. The architectural style employs organic shapes and colors that echo the natural landscape of Havasu Canyon. Exterior cladding features tapered panels, creating a dynamic interplay of light and shadow while harmonizing with the surrounding environment.

#### Material and Sustainability Features

The construction utilizes Accoya® wood for its durability and environmental sustainability, along with QuadCore® KarrierPanel® for its low-embodied carbon and efficient thermal performance. Photovoltaic shingles are integrated into the roofing system, promoting energy self-sufficiency. A rainwater harvesting system ensures resource conservation, which is critical in the region’s arid climate. The design prioritizes passive cooling and heating through natural ventilation and strategically placed openings, further reducing ecological impact.

### Interior and Spatial Design

The interior layout features an open floor plan that fosters a strong connection between indoor and outdoor environments, reflecting the cultural emphasis on land engagement. Multipurpose spaces accommodate various activities, ensuring flexibility for gatherings and communal interactions. Ample natural light is provided through skylights and large windows, enhancing the living experience by integrating spectacular views with functional space.

#### Social and Cultural Relevance

The initiative further addresses themes of equity and social responsibility. By focusing on sustainable living conditions, it aims to empower the Havasupai community, particularly younger generations, encouraging them to engage in local development. The design serves as a cultural bridge between tradition and modernity, offering a model for future sustainable housing initiatives while respecting indigenous practices and addressing historical disparities.

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MICROHOME 10: Celebrating Small-Scale Living with €100,000 Prize Fund and Kingspan’s Innovation

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Competition organisers

The MICROHOME 10 competition invites participants to submit visionary designs for off-grid, modular microhomes that push the limits of sustainable, small-scale living. Organised by Buildner in partnership with Kingspan and Hapi Homes, this tenth edition sets the challenge of designing a dwelling for two people within a maximum floor area of 25 m², encouraging bold solutions adaptable to any urban or rural location. The competition continues Buildner’s mission to foster innovative approaches to compact, energy-efficient housing that can address pressing global challenges.

This year’s edition offers a generous total prize fund of €100,000, including the Kingspan Award for designs that integrate high-performance Kingspan products and the Hapi Homes Award for a project selected for real-world construction. In addition to cash prizes, the winners gain international exposure through Buildner’s media partnerships, publications, and a dedicated MICROHOME magazine, further amplifying their ideas to the wider architectural community.

Key dates for MICROHOME 10 include the closing date for registration on 25 September 2025, the submission deadline on 29 October 2025 (11:59 p.m. London time), and the announcement of winners on 9 December 2025. These milestones ensure participants have clear timelines to develop and present their concepts, with early registration discounts available to support students and emerging designers worldwide.

MICROHOME

Design a new small-scale home concept in the 10th edition of MICROHOME — 100,000 € prize + construction

100,000 € Prize Fund / Kingpsan Edition #10 ideas COMPETITION
Prize 100,000 € + Potential realisation
Eligibility Open to all
Final registration deadline 25 September 2025

Enter an open architecture
competition now

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